A New Waveform Family for Secondary Peaks Rejection in Code Tracking Discriminators for Galileo BOC(n,n) Modulated Signals

Giuseppe Avellone, Maristella Frazzetto, and Ettore Messina

Abstract:	Binary Offset Carrier, BOC, modulated signals are at the moment candidates both for new civil (free) signal in GPS update and for some of the European Global Navigation Satellite System (GNSS) Galileo signals. They present better multipath mitigation and, potentially, better tracking characteristic. Unfortunately they also exhibit a multiple peaks autocorrelation function. Such secondary peaks could introduce problems both in the acquisition and tracking stages, when usual approaches are employed at the receiver. Several possible strategies for mitigating lock ambiguities in acquisition and tracking, related to secondary peaks, have been presented in the past for BOC modulated signals. In this contribution we present a new waveform, or better a family of waveforms , to be used as local code in classical early minus late (EML) code tracking scheme, focusing our attention on BOC(n,n) modulated signal. We will analyze both the tracking ambiguity mitigation and the multipath rejection capability of the proposed waveform comparing it with some techniques already proposed in literature. All the results are presented for the L1 Galileo signal format.
Published in:	Proceedings of the 2007 National Technical Meeting of The Institute of Navigation January 22 - 24, 2007 The Catamaran Resort Hotel San Diego, CA
Pages:	246 - 251
Cite this article:	Avellone, Giuseppe, Frazzetto, Maristella, Messina, Ettore, "A New Waveform Family for Secondary Peaks Rejection in Code Tracking Discriminators for Galileo BOC(n,n) Modulated Signals," Proceedings of the 2007 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 2007, pp. 246-251.
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